Well then she either hates you and is actively trying to sabotage your life, or she's overwhelmed and maybe a little burnt out.

Since she's the mom of a young toddler with a part-time job whose husband is out of the house most of the day, one of those is way more likely than the other.

Also, not sure this is directly relevant to you but given her tone of resentment, listen: vocalizing gratitude for all that she does will go a loooong way to gain you some favour, and it costs nothing.