Maybe, maybe not.
If you saw how happy Ilona got suddenly last night, you might think different. She burst into Irmas room, happier than ever, and woke her up. Seems somebody is comming.
This was just before Irma masturbated, and she was under the covers, and almost asleep. So it's thanks to Ilona that Irma did it last night, because the did it after she took her clothes back off after Ilona woke her.