I am sorry to hear about the loss of your dog. I know we can get very attached to our pets, but it is most unlikely that the dream really does pertain to your lost dog. Since we are designed in God’s image – that of a human form – God’s main concern is to ensure that our thinking is correct. This idea seems confirmed by your own comment concerning the dream, “it did not had nothin to do about dogs or smthin”
A dog in your dream represents an emotional aspect of yourself – one which can motivate or incline you towards having feelings of friendship and loyalty. As the dog involved here was your pet dog, it would indicate an idea/feeling pertaining to a friendship and/or a loyalty that you would particularly favour or want to nurture. The idea that the dog “even interrupted or "crushed" my dream”, can imply that a particular feeling pertaining to a friendship or loyalty could be regardedd as having the ability to crush or destroy your dreams, meaning your hopes and dreams; that this feeling of friendship could prevent you from achieving your own hopes and dreams.
You may need to question your own rational feelings (represented by your sister) as to whether this feeling of friendship or loyalty was ever really lost (started asking my sister if the dog wasnt lost). You appear to become over whelmed with emotion (i cried a lot) by reconnecting with this feeling of friendship or loyalty, perhaps especially so after believing this feeling had been lost after it became necessary to put it aside. Going with the dog to the car would imply going to see the feeling of friendship and loyalty you have in relation to a rational, logical way of thinking. From a very instinctive, irrational and more subconscious perspective, there seems to be a very emotional reaction (the dog appears to be crying … but a happy cry) related to your conscious encounter with this feeling of friendship or loyalty that was presumed lost and gone forever. (lost dogs in my country are never found)
Because the dog actually speaks to you, seemingly in a physical manner – talking into your ear – it indicates that a feeling of friendship or loyalty presents itself as being a quite rational feeling. The words spoken, “I WANT” implies a want or need that comes from a subconscious level (because a dog says it). Here it could easily be assumed that the want or need referred to would be the reestablishing of your former relationship; of getting back together again. As the words “I WANT “ are spoken twice, it is indicated that the want or need is a negative or wrong need. “then i went in some place” can indicate that you may have been “taken in” – tricked or fooled, unless you actually saw yourself walking inside somewhere. If that was not the case here, the fact that you go from outside to an inside location would suggest going from seeing things realistically to seeing them with human delusions/illusions.
Because the dog is a living animal, it does represent a person you were most likely very fond of, who is regarded as a loyal friend. Is this someone you had to leave behind when you moved to Houston. This is probably a female since you refer to the dog as “she”. This is not a case of a dog (either dead or alive) saying goodbye. (Since the dog can speak in this dream, wouldn’t it say “good bye” then instead of “I want”?)