That is really bad news. The other excuses have been
1. The landlady is coming around for rent
2. The water heater needs fixing.
Maybe she is on a period as that does means she cannot see you at a later time and not take your money.
3. The landlord doesn't want me working too late.
Which I got on arrival, tried again a couple of days later and saw her at a later time than original

Positive for me too and need to write up, but is obviously popular, but a pain in the arse to actually book & see at previously agreed times.