Hi,
I am a pretty firm believer in trusting one's intuition. If you feel strongly that you should communicate with the mother, then perhaps that's what you should do.
However, it seems that there are two different situations going on - the dreams and the intuitive feelings. They may or may not be the same. Dreams are often symbolic, meaning that the images that appear in dreams are often stand-ins for other things - people, emotions, situations, etc. And there are also those who theorize that all characters that appear in dreams are actually parts of ourselves. So from that lens you might want to examine if there is any situation that is in your own life that feels controlling or if there is something that you are keeping close to you as a security blanket.
I'm not really not personally committed to any one dream theory - I think that dreams are as individual as the individuals having them and I think that meanings are always best assigned by the dreamer. So do what you feel is best!