Here is the sentence:
Latoya would have swum farther, but a cramp
stang her side, so she
rode a wave into shore and spent the afternoon
watching handsome young men parading on the beach.
The second verb, stang, is the problem. As you know, the sentence requires the simple past. Stung is the correctly spelled form.
Verb | Simple Present | Simple Past | Past Participle |
sting | sting(s) | stung | stung |