Chances of approval - sponsor income related

[vanment]

My girlfriend would like to visit the US this fall for a few months. She's a student in Poland set to graduate this summer. I work part time and am currently attending school as well. My part time job will net about $15k this year, however I recently started this job a few months ago. Last year I worked sparingly due to an injury. I have $15k in savings and she'll have roughly $2k of her own money. Is this considered adequate? What are the chances of approval? She will be 23 years old in the fall. Is it true that unmarried young people have very low approval rates? Is there anything other than a lack of income that can cause a visa denial?

[jnk]

Usually $5000/person should be good enough. She is graduating this summer might hurt her case. As you know unmarried young people have low approval rate. Please read some useful information at,

https://www.immihelp.com/us-visitor-visa-for-young-persons/

There is no harm to try her luck.