My boss is trying to force me out of the job?

I have this receptionist job that works so well since I’m in college and I work part time in the evenings while I’m in school. I graduate college this week and am actively looking for jobs and have nothing yet but I am still optimistic and hopeful.
My parents are extremely ambitious and successful but they haven’t been putting any pressure on me and want me to enjoy this time. If it were up to me I would have taken some time off completely after graduation and not worked at all then gone into a new job but I need spending money lol and I don't know if my parents would have been completely ok with that.
When I first started at this job 6 months ago I told people that I would be graduating in December then probably leaving because I want to pursue writing ( big mistake ) and like I said now December is here and still no writing job.
Today I went to talk to my boss and give her an update on how I’m graduating this week and was looking for jobs but I was in no rush to leave my receptionist job. She told me congratulations and stuff and then told me I reminded her to post my job listing online to look for a new person which freaked me out.
Like I said I’m not ready to leave this job yet ( I eventually will for more money ) but I love it because I’m meeting some great people and have found some great friends.
I feel like her posting my job gives me a forced time frame to leave in a sense.
I called my dad about it and he said I shouldn’t have ever let them know mt next move and her impulse was to look for someone else to fill my position since I said I was leaving but he also nonchalantly said that if they did fill my position that it was what it was and I would just have to look for something else.
I’m freaking out because I’m not ready to leave quite yet and don’t want to rush things.
Should I go back to my boss tomorrow and tell her not to post my job yet? I was thinking of telling her that I wasn’t looking for jobs after all and would be there for a while.
My boss is trying to force me out of the job?
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