I am so sorry for your loss. Wishing your strength, grace and light as you grieve.
Yes and no. It likely was your mother reaching out to you when she passed. No, you are not crazy. It doesn’t happen to everyone (and it has yet to happen to me) but that doesn’t mean it isn’t possible. So no, you are not crazy.
Those who’ve crossed over can visit us in dreams and this time of the year the veil between worlds is thin so it’s not unexpected to have a loved one visit or communicate through a dream. Often they want to comfort those left behind or communicate something they hadn’t the time to before.
I’ll search the forum to see if I can find other posts that might help you but wanted to let you know I hear you, I understand and we as a coven are here to support you.