It’s nice that God allowed this person’s mom to speak with her.
I’m very glad I don’t have “well-meaning friends” who tell me negative stuff about God. They would not be my friends for very long.
When my husband died, I got talking with our neighbor who is a nice older lady of some evangelical or Baptist faith. She talked about when her mother died and how much she missed her mother and wanted to know she was okay. She finally had a dream indicating that her mom was in Heaven and discussed it with her minister and he agreed with the meaning of the dream.
I had similar dreams a few months after my mother died and totally unexpectedly also a few months after my husband died.